Ergonomic Chair It is a type of chair that is designed for use with office desks. It is usually a wheel chair with a set of wheels for movement and an adjustable height function. Modern health chairs often use outstanding weight-bearing legs. (Often called a gas lift), which is placed under a chair seat near the floor, the health chair was developed in the mid-19th century as more and more people spend time sitting at a desk. This has led to the use of features not found in other chairs.